Here is how Ifixed it on a Mint/Ubuntu install
1.) First download the latest AMDGPU-Pro driver from here:
https://www.amd.com/en/support
Navigate to your relevant video card:
2.) Download the installer
One issue is that by default they give you a version for the latest version of........
Just install these packages and restart the VM:
1.) Enable guest-utils on the host side:
sudo apt install virtualbox-guest-utils virtualbox-guest-x11
2.) Enable guest editions on the VMside
This must be done for each VM that you want to have the guest additons for accelerated GPU performance and for drag and drop/clipboard sharing
First insert the Guest Addtions CD image........
The easiest way to know if your videos are playing with GPU acceleration are to watch the process of xplayer, mpv or whatever you are playing. The CPU usage should be no more than 10% for that process/program if it is using acceleration.
Let's manually play with vdpau to make sure it works before we make it permanent:
First make sure you have libvdpau installed:
sudo apt install vdpau-driver-all
If yo........
I am using a GTX 1060 but replace the download for the driver with the correct/current version for your particular card by visiting: http://www.nvidia.com/Download/index.aspx?lang=en-us
yum install automake curl openssl-devel libcurl-devel gcc gcc-c++
yum -y install kernel-devel-`uname -r`
yum -y install unzip
#the........